Thats were i had it in my 06 SRT-8 magnum...believe it or not they didnt come with a spare tire,they can with a can of sealer and a compressor...

..Or you can do what my friend does he has it in his gym bag behind his drivers seat for fast opening...LOL...He has everything hidden so its hard to detect he even has nitrous...its funny the gym bag has his lifting belt wrapped around in and a small hole under the bag were the line goes out then under the carpet thru the floor to the front of his car....

....Sneaky huh...